๐”– Bobbio Scriptorium
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Pressure structure of solar coronal loops, III

โœ Scribed by T. D. Sreedharan; K. Sasidharan; A. Satya Narayanan; V. Krishan


Publisher
Springer
Year
1992
Tongue
English
Weight
706 KB
Volume
142
Category
Article
ISSN
0038-0938

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โœฆ Synopsis


The theory of ideal magnetohydrodynamic turbulence in cylindrical geometry is used to study the steady-state structure of a coronal loop. The pressure profile is derived from MHD equations by representing the velocity and magnetic fields as the superposition of Chandrasekhar-Kendall functions. Such a representation brings out the three-dimensional structure of the pressure in the coronal loop. The radial, azimuthal, and axial variations of the pressure for a constant density loop are discussed in detail. The pressure has an oscillatory behavior for different azimuthal angles at some radial positions. This study predicts more features in pressure than can be compared with the presently available observations.


๐Ÿ“œ SIMILAR VOLUMES


The structure of coronal magnetic loops
โœ Riccardo Giachetti; Gerard Hoven; Claudio Chiuderi ๐Ÿ“‚ Article ๐Ÿ“… 1977 ๐Ÿ› Springer ๐ŸŒ English โš– 846 KB
The structure of coronal magnetic loops
โœ Claudio Chiuderi; Riccardo Giachetti; Gerard Hoven ๐Ÿ“‚ Article ๐Ÿ“… 1977 ๐Ÿ› Springer ๐ŸŒ English โš– 958 KB

We present here a model, based on observations, for the magnetic-field equilibrium of a cool coronal loop. The pressure structure, taken from the Harvard/Skylab EUV data, is used to modify the usual force-free-field form in quasi-cylindrical symmetry. The resulting field, which has the same directio

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โœ A. W. Hood; E. R. Priest ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› Springer ๐ŸŒ English โš– 789 KB

Solar coronal loops are observed to be remarkably stable structures. A magnetohydrodynamic stability analysis of a model loop by the energy method suggests that the main reason for stability is the fact that the ends of the loop are anchored in the dense photosphere. In addition to such line-tying,